forked from TrueCloudLab/restic
119 lines
2.6 KiB
Go
119 lines
2.6 KiB
Go
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package fuse
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import (
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"os"
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"restic"
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"restic/debug"
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"golang.org/x/net/context"
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"bazil.org/fuse"
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"bazil.org/fuse/fs"
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)
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// Config holds settings for the fuse mount.
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type Config struct {
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OwnerIsRoot bool
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Host string
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Tags []string
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Paths []string
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}
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// Root is the root node of the fuse mount of a repository.
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type Root struct {
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repo restic.Repository
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cfg Config
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inode uint64
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snapshots restic.Snapshots
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dirSnapshots *DirSnapshots
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blobSizeCache *BlobSizeCache
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}
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// ensure that *Root implements these interfaces
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var _ = fs.HandleReadDirAller(&Root{})
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var _ = fs.NodeStringLookuper(&Root{})
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// NewRoot initializes a new root node from a repository.
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func NewRoot(ctx context.Context, repo restic.Repository, cfg Config) (*Root, error) {
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debug.Log("NewRoot(), config %v", cfg)
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snapshots := restic.FindFilteredSnapshots(ctx, repo, cfg.Host, cfg.Tags, cfg.Paths)
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debug.Log("found %d matching snapshots", len(snapshots))
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root := &Root{
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repo: repo,
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cfg: cfg,
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inode: 1,
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snapshots: snapshots,
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}
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root.dirSnapshots = NewDirSnapshots(root, fs.GenerateDynamicInode(root.inode, "snapshots"), snapshots)
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root.blobSizeCache = NewBlobSizeCache(ctx, repo.Index())
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return root, nil
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}
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// Root is just there to satisfy fs.Root, it returns itself.
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func (r *Root) Root() (fs.Node, error) {
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debug.Log("Root()")
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return r, nil
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}
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// Attr returns the attributes for the root node.
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func (r *Root) Attr(ctx context.Context, attr *fuse.Attr) error {
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attr.Inode = r.inode
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attr.Mode = os.ModeDir | 0555
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if !r.cfg.OwnerIsRoot {
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attr.Uid = uint32(os.Getuid())
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attr.Gid = uint32(os.Getgid())
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}
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debug.Log("attr: %v", attr)
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return nil
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}
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// ReadDirAll returns all entries of the root node.
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func (r *Root) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
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debug.Log("ReadDirAll()")
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items := []fuse.Dirent{
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{
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Inode: r.inode,
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Name: ".",
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Type: fuse.DT_Dir,
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},
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{
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Inode: r.inode,
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Name: "..",
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Type: fuse.DT_Dir,
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},
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{
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Inode: fs.GenerateDynamicInode(r.inode, "snapshots"),
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Name: "snapshots",
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Type: fuse.DT_Dir,
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},
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// {
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// Inode: fs.GenerateDynamicInode(0, "tags"),
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// Name: "tags",
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// Type: fuse.DT_Dir,
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// },
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// {
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// Inode: fs.GenerateDynamicInode(0, "hosts"),
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// Name: "hosts",
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// Type: fuse.DT_Dir,
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// },
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}
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return items, nil
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}
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// Lookup returns a specific entry from the root node.
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func (r *Root) Lookup(ctx context.Context, name string) (fs.Node, error) {
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debug.Log("Lookup(%s)", name)
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switch name {
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case "snapshots":
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return r.dirSnapshots, nil
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}
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return nil, fuse.ENOENT
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}
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